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ELECTRICAL & POWER CONTROL
A
SECTION
POWER CONTROL SYSTEM
PCS B
C
D
E
CONTENTS
IPDM E/R Description ..............................................................18
. F
DTC Logic ...............................................................18
.
FUNCTION DIAGNOSIS .............................. 4
. Diagnosis Procedure ..............................................18 .
G
RELAY CONTROL SYSTEM ............................. 4
. POWER SUPPLY AND GROUND CIRCUIT .... 19
System Diagram ....................................................... 4
. Diagnosis Procedure ..............................................19
.
System Description .................................................. 4
.
Component Parts Location ....................................... 5
. ECU DIAGNOSIS ........................................ 20
. H
POWER CONTROL SYSTEM ............................ 7
. IPDM E/R (INTELLIGENT POWER DISTRI-
System Diagram ....................................................... 7
. BUTION MODULE ENGINE ROOM) ................ 20 I
System Description .................................................. 7
. Reference Value .....................................................20.
Component Parts Location ....................................... 7
. Wiring Diagram - IPDM E/R - .................................27 .
Fail Safe .................................................................30
.
SIGNAL BUFFER SYSTEM ............................... 8
. DTC Index ..............................................................32
. J
System Diagram ....................................................... 8
.
System Description .................................................. 8
. PRECAUTION ............................................. 33
.
Component Parts Location ....................................... 8
. K
PRECAUTIONS ................................................. 33
POWER CONSUMPTION CONTROL SYS- Precaution for Procedure without Cowl Top Cover 33 ....
TEM .................................................................... 9
. Precaution for Battery Service ................................33
.
System Diagram ....................................................... 9
. L
System Description .................................................. 9
. ON-VEHICLE REPAIR ................................ 34
.
Component Parts Location ..................................... 10
.
IPDM E/R (INTELLIGENT POWER DISTRI-
PCS
DIAGNOSIS SYSTEM (IPDM E/R) ....................11
. BUTION MODULE ENGINE ROOM) ................ 34
Diagnosis Description ............................................ 11
. Exploded View ........................................................34
.
CONSULT-III Function (IPDM E/R) ........................ 13 . Removal and Installation ........................................34
.
N
POWER DISTRIBUTION SYSTEM
COMPONENT DIAGNOSIS ........................ 16
.
BASIC INSPECTION .................................. 36
.
U1000 CAN COMM CIRCUIT ............................16
. O
Description ............................................................. 16
. DIAGNOSIS AND REPAIR WORKFLOW ........ 36
DTC Logic .............................................................. 16
. Work Flow ...............................................................36
.
Diagnosis Procedure .............................................. 16.
FUNCTION DIAGNOSIS ............................. 39
. P
B2098 IGNITION RELAY ON STUCK ..............17
.
Description ............................................................. 17
. POWER DISTRIBUTION SYSTEM ................... 39
DTC Logic .............................................................. 17
. System Description .................................................39
.
Diagnosis Procedure .............................................. 17. Component Parts Location .....................................41.
Component Description .........................................42
.
B2099 IGNITION RELAY OFF STUCK .............18
.
DIAGNOSIS SYSTEM (BCM) ........................... 43
Revision: 2007 June PCS-1 G37 Coupe
COMMON ITEM ....................................................... 43
. POWER SUPPLY AND GROUND CIRCUIT .... 69
.
COMMON ITEM : CONSULT-III Function (BCM -
COMMON ITEM) ................................................... 43
. BCM .......................................................................... 69
.
BCM : Diagnosis Procedure ................................... 69 .
INTELLIGENT KEY .................................................. 44
.
INTELLIGENT KEY : CONSULT-III Function IPDM E/R (INTELLIGENT POWER DISTRIBU-
(BCM - INTELLIGENT KEY) .................................. 44. TION MODULE ENGINE ROOM) ............................. 69 .
IPDM E/R (INTELLIGENT POWER DISTRIBU-
COMPONENT DIAGNOSIS ....................... 48
. TION MODULE ENGINE ROOM) : Diagnosis Pro-
cedure .................................................................... 69
.
U1000 CAN COMM CIRCUIT ........................... 48
.
Description ............................................................. 48
. PUSH-BUTTON IGNITION SWITCH ................ 71
.
DTC Logic .............................................................. 48
. Description ............................................................. 71
.
Diagnosis Procedure ............................................. 48 . Component Function Check ................................. 71 .
Diagnosis Procedure .............................................. 71 .
U1010 CONTROL UNIT (CAN) ........................ 49
. Component Inspection ........................................... 72 .
DTC Logic .............................................................. 49
.
Diagnosis Procedure ............................................. 49 . PUSH-BUTTON IGNITION SWITCH POSI-
Special Repair Requirement .................................. 49 . TION INDICATOR ............................................. 73
.
Description ............................................................. 73
.
B2553 IGNITION RELAY .................................. 50
. Component Function Check ................................. 73 .
Description ............................................................. 50
. Diagnosis Procedure .............................................. 73 .
DTC Logic .............................................................. 50
. Component Inspection ........................................... 74 .
Diagnosis Procedure ............................................. 50 .
ECU DIAGNOSIS ....................................... 75
B260A IGNITION RELAY ................................. 52
.
Description ............................................................. 52
. BCM (BODY CONTROL MODULE) ................. 75
.
DTC Logic .............................................................. 52
. Reference Value .................................................... 75.
Diagnosis Procedure ............................................. 52 . Wiring Diagram - PDS (POWER DISTRIBUTION
SYSTEM) - ............................................................. 98
.
B2611 ACC RELAY .......................................... 54
. Fail Safe .............................................................. 103
.
Description ............................................................. 54
. DTC Inspection Priority Chart ............................ 105 .
DTC Logic .............................................................. 54
. DTC Index ........................................................... 107
.
Diagnosis Procedure ............................................. 55 .
IPDM E/R (INTELLIGENT POWER DISTRI-
B2614 ACC RELAY CIRCUIT .......................... 57
. BUTION MODULE ENGINE ROOM) ............... 109
.
Description ............................................................. 57
. Reference Value .................................................. 109 .
DTC Logic .............................................................. 57
. Wiring Diagram - PDS (POWER DISTRIBUTION
Diagnosis Procedure ............................................. 57 . SYSTEM) - ........................................................... 116
.
Component Inspection (Accessory Relay) ............ 58 . Fail Safe .............................................................. 121
.
B2615 BLOWER RELAY CIRCUIT .................. 60
. DTC Index ........................................................... 123
.
Description ............................................................. 60
.
PRECAUTION ........................................... 124
DTC Logic .............................................................. 60
.
Diagnosis Procedure ............................................. 60 . PRECAUTIONS ............................................... 124
.
Component Inspection (Blower Relay) .................. 61 . Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
B2616 IGNITION RELAY CIRCUIT .................. 63
.
SIONER" .............................................................. 124
.
Description ............................................................. 63
.
Precaution Necessary for Steering Wheel Rota-
DTC Logic .............................................................. 63
.
tion after Battery Disconnect ................................ 124 .
Diagnosis Procedure ............................................. 63 .
Component Inspection (Ignition Relay) ................. 64 . SYMPTOM DIAGNOSIS ........................... 125
B2618 BCM ....................................................... 66
. POWER DISTRIBUTION SYSTEM ................. 125
.
Description ............................................................. 66
. Symptom Table .................................................... 125
.
DTC Logic .............................................................. 66
.
Diagnosis Procedure ............................................. 66 . PUSH-BUTTON IGNITION SWITCH DOES
NOT OPERATE ............................................... 127
.
B261A PUSH-BUTTON IGNITION SWITCH .... 67
. Description ........................................................... 127
.
Description ............................................................. 67
.
Diagnosis Procedure ............................................ 127 .
DTC Logic .............................................................. 67
.
Diagnosis Procedure ............................................. 67 .
Revision: 2007 June PCS-2 G37 Coupe
PUSH-BUTTON IGNITION SWITCH POSI- BCM (BODY CONTROL MODULE) ............... 129
TION INDICATOR ........................................... 128
. Exploded View ...................................................... 129
. A
Description ........................................................... 128
. Removal and Installation ...................................... 129
.
Diagnosis Procedure ............................................ 128 .
PUSH BUTTON IGNITION SWITCH ............... 130
B
ON-VEHICLE REPAIR .............................. 129
. Exploded View ...................................................... 130
.
Removal and Installation ...................................... 130
.
C
D
E
F
G
H
I
J
K
L
PCS
N
O
P
Revision: 2007 June PCS-3 G37 Coupe
RELAY CONTROL SYSTEM
< FUNCTION DIAGNOSIS > [IPDM E/R]
FUNCTION DIAGNOSIS
RELAY CONTROL SYSTEM
System Diagram INFOID:0000000001605854
JPMIA0614GB
System Description INFOID:0000000001605855
IPDM E/R activates the internal control circuit to perform the relay ON-OFF control according to the input sig-
nals from various sensors and the request signals received from control units via CAN communication.
CAUTION:
IPDM E/R integrated relays cannot be removed.
Revision: 2007 June PCS-4 G37 Coupe
RELAY CONTROL SYSTEM
< FUNCTION DIAGNOSIS > [IPDM E/R]
Reference A
Control relay Input/output Transmit unit Control part
page
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